<template>
  <el-menu
    default-active="1-4-1"
    class="el-menu-vertical-demo"
    background-color="#545c64"
    text-color="#fff"
    active-text-color="#ffd04b"
    @open="handleOpen"
    @close="handleClose"
    :collapse="isCollapse"
  >
  <h3>{{isCollapse ? '后台' : '手机商城后台系统'}}</h3>

    <el-menu-item @click="clickMenu(item)" v-for="item in noChildren" :index="item.path+''" :key="item.path">
      <i class="'el-icon-' + item.icon"></i>
      <span slot="title">{{item.label}}</span>
    </el-menu-item>
    <el-submenu v-for="item in hasChildren" :index="item.path+''" :key="item.path">
      <template slot="title">
        <i class="'el-icon-' + item.icon"></i>
        <span slot="title">{{item.label}}</span>
      </template>
      <el-menu-item-group v-for="(subItem,subIndex) in item.children" :key="subItem.path">
        <el-menu-item  @click="clickMenu(subItem)" :index="subIndex.toString()">{{subItem.label}}</el-menu-item>
      </el-menu-item-group>
    </el-submenu>
  </el-menu>
</template>

<style lang="less" scoped>
.el-menu-vertical-demo:not(.el-menu--collapse) {
  width: 200px;
  min-height: 400px;
}
.el-menu{
    height: 100%;
    border: none;
    h3{
        color:#fff;
        text-align:center;
        line-height:48px;
    }
}
</style>

<script>
export default {
  data() {
    return {
      
      menu:[]
    };
  },
  methods: {
    handleOpen(key, keyPath) {
      console.log(key, keyPath);
    },
    handleClose(key, keyPath) {
      console.log(key, keyPath);
    },
    clickMenu(item){
        this.$router.push({
            name:item.name
        })
        this.$store.commit('selectMenu',item)

    }
  },
  computed:{
      noChildren(){
          return this.asyncMenu.filter(item => !item.children)
      },
      hasChildren(){
          return this.asyncMenu.filter(item => item.children)
      },
      isCollapse(){
        return this.$store.state.tab.isCollapse
      },
      asyncMenu(){
        return this.$store.state.tab.menu
      }
  }
};
</script>